Mathematics Exam Past Questions and Answers | JAMB, WAEC and NECO

Mathematics looks at measurement, relationships, and properties of numbers and groups using numbers and symbols. Important topics in math include arithmetic, algebra, geometry, and calculus.

• Question 651: Calculate the length in cm. of the area of a circle of diameter 8cm which subtends an angle of 22$\frac{1}{2}$^o at the centre of the circle Options:
  A) 2$\pi$
  B) $\pi$
  C) $\frac{2}{3}$
  D) $\frac{\pi }{2}$
  Show Answer
  The correct answer is D .
• Question 652: If p : q = $\frac{2}{3}$ : $\frac{5}{6}$ and q : r = $\frac{3}{4}$ : $\frac{1}{2}$, find p : q : r Options:
  A) 12 : 15 : 10
  B) 12 : 15 : 16
  C) 10 : 15 : 24
  D) 9 : 10 : 15
  Show Answer
  The correct answer is A .
• Question 653: How many three-digit numbers can be formed from 32564 without repeating any of the digits? Options:
  A) 120
  B) 10
  C) 20
  D) 60
  Show Answer
  The correct answer is D .
• Question 654: Simplify and express in standard form $\frac{0.00275\times 0.0064}{0.025\times 0.08}$ Options:
  A) 8.8 x 10^-1
  B) 8.8 x 10^-2
  C) 8.8 x 10^-3
  D) 8.8 x 10³
  Show Answer
  The correct answer is C .
• Question 655: If M represents the median and D the mode of the measurements 5, 9, 3, 5, 7, 5, 8, then (M, D) is Options:
  A) (6, 5)
  B) (5, 8)
  C) (5, 7)
  D) (5, 5)
  E) (7, 5)
  Show Answer
  The correct answer is D .
• Question 656:

  

  In the figure, TSP = PRQ, QR = 8cm, PR = 6cm and ST = 12cm. Find the length SP.

  Options:
  A) 4cm
  B) 16cm
  C) 9cm
  D) 14cm
  E) Impossible, insufficient data
  Show Answer
  The correct answer is B .
• Question 657: Simplify ($\frac{1}{x^{-1}}+\frac{1}{y^{-1}}$)^-1 Options:
  A) $\frac{x}{y}$
  B) xy
  C) $\frac{x}{y}$
  D) (xy)^-1
  Show Answer
  The correct answer is C .
• Question 658: A pyramid is constructed on a cuboid. The figure has Options:
  A) twelve faces
  B) thirteen vertices
  C) fourteen edges
  D) fifteen edges
  E) sixteen edges
  Show Answer
  The correct answer is E .
• Question 659: If temperature t is directly proportional to heat h, and when t = 20^oC, h = 50 J, find t when h = 60J Options:
  A) 24^oC
  B) 20^oC
  C) 34^oC
  D) 30^oC
  Show Answer
  The correct answer is A .
• Question 660: A micrometer is defined as one millionth of a millimeter Options:
  A) 0.00012m
  B) 0.0000012m
  C) 0.000012m
  D) 0.00000012m
  E) 0.000000012m
  Show Answer
  The correct answer is C .